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Re: [PATCH v2 2/7] mm: introduce local state for lazy_mmu sections
- To: David Hildenbrand <david@xxxxxxxxxx>
- From: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
- Date: Fri, 12 Sep 2025 14:56:47 +0200
- Cc: Kevin Brodsky <kevin.brodsky@xxxxxxx>, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Andreas Larsson <andreas@xxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>, Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>, Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Ryan Roberts <ryan.roberts@xxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Yeoreum Yun <yeoreum.yun@xxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, Mark Rutland <Mark.Rutland@xxxxxxx>
- Delivery-date: Fri, 12 Sep 2025 12:57:41 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Fri, Sep 12, 2025 at 02:40:55PM +0200, David Hildenbrand wrote:
> It would just be passing more context down to the architecture, right?
Yes. Namely this one would be arch-defined and arch_enter_lazy_mmu_mode()
by default.
static inline void arch_enter_lazy_mmu_mode_pte(struct mm_struct *mm,
unsigned long addr,
unsigned long end,
pte_t *ptep)
{
...
}
> David / dhildenb
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